/Engine/Source/Runtime/AdvancedWidgets/Public/Widgets/PropertyViewer/SPropertyViewer.h
typedef TBaseDelegate_FourParams< [FReply](API\Runtime\SlateCore\Input\FReply), const [FGeometry](API\Runtime\SlateCore\Layout\FGeometry) &, const [FPointerEvent](API\Runtime\SlateCore\Input\FPointerEvent) &, [FHandle](API\Runtime\AdvancedWidgets\Widgets\PropertyViewer\SPropertyViewer\FHandle), [TArrayView](API\Runtime\Core\Containers\TArrayView)< const [FFieldVariant](API\Runtime\CoreUObject\UObject\FFieldVariant) > > FOnDragDetected